Many of us like to start the day with a cup of coffee and perhaps end the day with a glass of wine or some other kind of alcoholic drink. But it turns out that these two substances, alcohol and caffeine, can have surprising impacts on our sleep.
Caffeine wakes you up, and alcohol makes you nod off, right? It's not that simple. Sleep scientist Matt Walker takes us into the eye-opening ways that these drinks affect the quantity and quality of our sleep. See the full piece in this short TED talk.
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